A 1:5 step-up transformer has 120V across the primary and 600 ohms resistance across the secondary. Assuming 100% efficiency, the primary current equals (A) 0.2 Amp. (B) 5 Amps. (C) 10 Amps. (D) 20 Amps.

A 1:5 step-up transformer has 120V across the primary and 600 ohms resistance
across the secondary. Assuming 100% efficiency, the primary current equals
 (A) 0.2 Amp. (B) 5 Amps.
 (C) 10 Amps. (D) 20 Amps.
by

2 Answers

Answer :

(A) 0.2 Amp.
by

Answer :

I1= V1 /R1 = 120/600 = 0.2 (η = 100%, losses are zero ∴V1 = VR = I1R1)
by

Related questions

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